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Changes Versus Homeostasis in Alpine and Sub-Alpine Vegetation Over Three Decades in the Sub-Arctic

机译:在亚北极地区的三个十年中高山和亚高山植被的动态平衡与动态平衡

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摘要

Plant species distributions are expected to shift and diversity is expected to decline as a result of global climate change, particularly in the Arctic where climate warming is amplified. We have recorded the changes in richness and abundance of vascular plants at Abisko, sub-Arctic Sweden, by re-sampling five studies consisting of seven datasets; one in the mountain birch forest and six at open sites. The oldest study was initiated in 1977–1979 and the latest in 1992. Total species number increased at all sites except for the birch forest site where richness decreased. We found no general pattern in how composition of vascular plants has changed over time. Three species, Calamagrostis lapponica, Carex vaginata and Salix reticulata, showed an overall increase in cover/frequency, while two Equisetum taxa decreased. Instead, we showed that the magnitude and direction of changes in species richness and composition differ among sites.Electronic supplementary materialThe online version of this article (doi:10.1007/s13280-012-0312-3) contains supplementary material, which is available to authorized users.
机译:由于全球气候变化,特别是在北极地区气候变暖加剧的情况下,预计植物物种分布将发生变化,多样性有望下降。通过重新采样由七个数据集组成的五项研究,我们记录了瑞典亚北极地区阿比斯库维管植物的丰富度和丰度变化;一处在白桦林中,六处在露天场所。最早的研究始于1977–1979,最新的研究始于1992年。除桦木林场(其丰富度下降)外,所有地区的物种总数均增加。我们没有发现维管植物成分随时间变化的一般模式。三种物种,即Calamagrostis lapponica,Carex阴道和Salix reticulata,总体覆盖率/频率增加,而两个木贼类群减少。取而代之的是,我们证明了物种丰富度和组成变化的幅度和方向在不同地点之间是不同的。电子补充材料本文的在线版本(doi:10.1007 / s13280-012-0312-3)包含补充材料,授权使用用户。

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